| Titre : | Spectral linear stochastic estimation of the turbulent velocity in a square three-dimensional wall jet (2010) |
| Auteurs : | Joseph W. Hall, Auteur ; Daniel Ewing, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Transactions of the ASME . Journal of fluids engineering (Vol. 132 N° 5, Mai 2010) |
| Article en page(s) : | 09 p. |
| Note générale : | fluids engineering |
| Langues : | Anglais |
| Tags : | pressure ; flow (dynamics) ; fluids ; channels (hydraulic engineering) ; turbulence ; fluctuations (physics) |
| Résumé : | The instantaneous turbulent velocity field in a three-dimensional wall jet was estimated from the fluctuating wall pressure using a spectral linear stochastic estimation technique. The wall jet investigated issued from a long square channel with Reynolds number of 90,000. Two downstream positions in the intermediate field were examined, x/h=10 and x/h=20, owing to the rapid changes in wall jet development over this region. The results indicate that the passage of the large-scale structures cause large, coherent lateral sweeps of fluid across the entire span of the wall jet. These sweeps are caused by the passage of half horseshoe-like structures and appear to be responsible for the larger lateral development of this flow. |
| DEWEY : | 620.1 |
| ISSN : | 0098-2202 |
| En ligne : | http://fluidsengineering.asmedigitalcollection.asme.org/Issue.aspx?issueID=27418&direction=P |
